英文關鍵字
abser
america
american
animal
area
atlantic
atlanticus
avian
bird
blue
caerulescens
caerulescensamerica
central
creek
dawn
day
daybreak
daylight
early
flying
fog
foggy
geese
goose
greater
lake
management
mid
middle
migrating
migration
mist
misty
morning
morph
northeast
northeastern
penney
pennsylvania
roost
skies
sky
snow
spring
springtime
states
sunny
sunrise
sunup
united
usa
waterfowl
waterfront
white
wild
wildlife